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Test 3 Questions
Properties, Changes, Chemistry
Question | Answer |
---|---|
What is a characteristic of a substance that can be measured or observed without changing the identity of the material? | Physical Property |
All of the following involves chemical changed EXCEPT _____ A) The burning of gasoline in a car B) Melting of ice C) The rusting of a car in a junk yard D) The digestion of food in your stomach | B |
Which of the following is NOT evidence of a chemical change? A) Occurrence of fizzing B) Change of phase C) Color change D) Formation of a precipitate | B |
Which of the following is an example of a chemical change? A) Water boiling B) Paper being cut C) Ice freezing D) Iron rusting | D |
What is the difference between a chemical and physical change? | Physical change - just changes what the objuct or compound looks like. Chemical change - Changes the chemical composition of the object. |
What is the difference between a chemical property and physical property? | Physical - Characteristics Chemical - Ability to change |
What is the difference between a chemical property and a chemical property? | Change - Changes the substance Property - Ability to change |
What is the difference between a physical property and a physical change? | Property - Characteristics Change - Changes what the object looks like. |
Why is boiling water not a chemical change? | Because it is just changing the state of matter and no the chemical composition. |
A reaction starts with one chemical that results in the formation of two new chemicals, what type of reaction is this? | Decomposition |
What type of reaction will combine two simple chemicals into a new more complex chemical? | Synthesis |